Caste system in India
The caste system in India is a system of social stratification which has pre-modern origins, was transformed by the British Raj, and is today the basis of reservation in India. It consists of two different concepts, varna and jāti, which may be regarded as different levels of analysis of this system.
Varna may be translated as "class," and refers to the four social classes which existed in the Vedic society, namely Brahmins, Kshatriyas, Vaishyas and Shudras. Certain groups, now known as Dalits, were historically excluded from the varna system altogether, and are still ostracised as untouchables.
Jāti may be translated as caste, and refers to birth. The names of jātis are usually derived from occupations, and considered to be hereditary and endogamous, but this may not always have been the case. The jātis developed in post-Vedic times, possibly from crystallisation of guilds during its feudal era. The jātis are often thought of as belonging to one of the four varnas.